MoonTools.ECS/src/EntityComponentReader.cs

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using System;
using System.Collections.Generic;
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namespace MoonTools.ECS
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{
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public abstract class EntityComponentReader
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{
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protected readonly World World;
internal EntityStorage EntityStorage => World.EntityStorage;
internal ComponentDepot ComponentDepot => World.ComponentDepot;
internal RelationDepot RelationDepot => World.RelationDepot;
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protected FilterBuilder FilterBuilder => new FilterBuilder(ComponentDepot);
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public EntityComponentReader(World world)
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{
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World = world;
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}
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protected ReadOnlySpan<TComponent> ReadComponents<TComponent>() where TComponent : unmanaged
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{
return ComponentDepot.ReadComponents<TComponent>();
}
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protected bool Has<TComponent>(in Entity entity) where TComponent : unmanaged
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{
return ComponentDepot.Has<TComponent>(entity.ID);
}
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protected bool Some<TComponent>() where TComponent : unmanaged
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{
return ComponentDepot.Some<TComponent>();
}
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protected ref readonly TComponent Get<TComponent>(in Entity entity) where TComponent : unmanaged
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{
return ref ComponentDepot.Get<TComponent>(entity.ID);
}
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protected ref readonly TComponent GetSingleton<TComponent>() where TComponent : unmanaged
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{
return ref ComponentDepot.Get<TComponent>();
}
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protected Entity GetSingletonEntity<TComponent>() where TComponent : unmanaged
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{
return ComponentDepot.GetSingletonEntity<TComponent>();
}
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protected bool Exists(in Entity entity)
{
return EntityStorage.Exists(entity);
}
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protected IEnumerable<(Entity, Entity, TRelationKind)> Relations<TRelationKind>() where TRelationKind : unmanaged
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{
return RelationDepot.Relations<TRelationKind>();
}
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protected bool Related<TRelationKind>(in Entity a, in Entity b) where TRelationKind : unmanaged
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{
return RelationDepot.Related<TRelationKind>(a.ID, b.ID);
}
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protected IEnumerable<(Entity, TRelationKind)> RelatedToA<TRelationKind>(in Entity entity) where TRelationKind : unmanaged
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{
return RelationDepot.RelatedToA<TRelationKind>(entity.ID);
}
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protected IEnumerable<(Entity, TRelationKind)> RelatedToB<TRelationKind>(in Entity entity) where TRelationKind : unmanaged
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{
return RelationDepot.RelatedToB<TRelationKind>(entity.ID);
}
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}
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}